针对隧道加强照明高能耗问题，结合太阳光直接照明的优势，提出太阳光和LED相结合的按需照明智能控制方法。根据实时洞外亮度和交通量确定的照明需求和洞内反馈亮度，由亮度需求差进行LED照明控制调节，最大化利用太阳光实现智能按需照明节能效果。根据试验测试结果，在满足规范要求和安全前提下，可达到50%以上的节能效果。通过对该技术的研究和应用，以期提升隧道照明节能技术水平，推动隧道提质升级，实现公路交通绿色低碳目标。

For the problem of high energy consumption caused by enhanced lighting of highway tunnel, a ondemand intelligent control method combining sunlight and LED is proposed through taking the advantage of direct sunlight illumination. According to the gap of lighting demand, determined by the brightness outside of the tunnel in real time and traffic volume, and the brightness feedback in the tunnel, LED lighting is adjusted so as to maximize the utilization of sunlight and realize energysaving effect of intelligent ondemand lighting. According to test result, on the premise of observing specifications and meeting safety requirements, more than 50% energy can be saved.With the research, energysaving technology of tunnel lighting can be promoted and thus to upgrade tunnel quality and achieve green lowcarbon highway traffic.